summaryrefslogtreecommitdiff
path: root/libdwelf
Commit message (Collapse)AuthorAgeFilesLines
* Do not use relative include paths in library files.Mark Wielaard2022-12-202-1/+5
| | | | | | | | | Rely on include dirs being set up correctly. Setup libdw AM_CPPFLAGS to include libebl directory. In libdwfl note that debuginfod.h is a generated file in the builddir. Only include it in the one file debuginfod-client.c that really needs it. Signed-off-by: Mark Wielaard <mark@klomp.org>
* lib{asm,cpu,dw,dwfl,dwelf}: Move platform depended include into system.hYonggang Luo2022-10-283-3/+5
| | | | Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
* libelf: Sync elf.h from glibcAndreas Schwab2022-08-082-0/+7
| | | | | | | | | | Adds PT_RISCV_ATTRIBUTES, SHT_RISCV_ATTRIBUTES, PT_AARCH64_MEMTAG_MTE, RELR definitions, LoongArch relocations. dwelf_elf_e_machine_string was updated to handle EM_LOONGARCH, and ebl_dynamic_tag_name was updated to handle the new RELR dynamic tags. Signed-off-by: Andreas Schwab <schwab@suse.de>
* libelf: Sync elf.h from glibc.Mark Wielaard2022-03-242-0/+7
| | | | | | | | | | | | | | Adds EM_INTELGT, NT_ARM_TAGGED_ADDR_CTRL, NT_ARM_PAC_ENABLED_KEYS, ELF_NOTE_FDO, NT_FDO_PACKAGING_METADATA and OpenRISC 1000 specific relocs. It also adds and renames some GNU_PROPERTY constants. But none of the constants the elfutils code uses was renamed or given a different constant value. dwelf_elf_e_machine_string was updated to handle EM_INTELGT. Signed-off-by: Mark Wielaard <mark@klomp.org>
* Improve building with LTOAlexander Miller2021-11-082-1/+6
| | | | | | | | | | | | | | Use symver attribute for symbol versioning instead of .symver assembler directive when available. Convert to use double @ syntax for default version in all cases (required when using the attribute). Add the attributes externally_visible, no_reorder if available when using assembler directives to improve the situation for < gcc-10. This is not 100% reliable, though; -flto-partition=none may still be needed in some cases. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=24498 Signed-off-by: Alexander Miller <alex.miller@gmx.de>
* Remove redundant casts of memory allocating functions returning void *Dmitry V. Levin2021-09-092-3/+8
| | | | | | | Return values of functions returning "void *", e.g. calloc, malloc, realloc, xcalloc, xmalloc, and xrealloc, do not need explicit casts. Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
* libdwelf: fix spelling typos in commentsDmitry V. Levin2020-12-123-3/+6
| | | | | | | algorith -> algorithm occured -> occurred Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
* libdwelf: fix spelling typos in strings returned by dwelf_elf_e_machine_stringDmitry V. Levin2020-12-122-3/+8
| | | | | | | embeded -> embedded Semicondutor -> Semiconductor Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
* libelf: Sync elf.h from glibc.Mark Wielaard2020-06-042-2/+7
| | | | | | | There is now finally a PT_GNU_PROPERTY define. Also EM_ARC_COMPACT2 got renamed to EM_ARCV2. Signed-off-by: Mark Wielaard <mark@klomp.org>
* libdwelf: Make dwelf_elf_begin return NULL only when there is an error.Mark Wielaard2019-08-133-8/+19
| | | | | | | | | | | | | | | | | | | | | | | dwelf_elf_begin was slightly different from elf_begin in case the file turned out to not be an ELF file. elf_begin would return an Elf handle with ELF_K_NONE. But dwelf_elf_begin would return NULL. This made it impossible to tell the difference between a file or decompression error and a (decompressed) file not being an ELF file. Since dwelf_elf_begin could still return different kinds of ELF files (ELF_K_ELF or ELF_K_AR - and theoretically ELF_K_COFF) this was not really useful anyway. So make it so that dwelf_elf_begin always returns an Elf handle unless there was a real error reading or decompressing the file. Otherwise return NULL to make clear there was a real error. Make sure that the decompression function returns DWFL_E_BADELF only when the file isn't compressed. In which case the Elf handle won't be replaced and can be returned (as ELF_K_NONE). Add a new version to dwelf_elf_begin so programs can rely on it returning NULL only for real errors. Signed-off-by: Mark Wielaard <mark@klomp.org>
* libdwelf: Add dwelf_elf_e_machine_string and use it in readelf.Mark Wielaard2019-07-104-1/+418
| | | | | | | | | | | | | | | | To print eh human readable description of the ELF e_machine header field we used the ebl name. But this is not set for most EM constants. Introduce a new function dwelf_elf_e_machine_string that does work for all known EM values. Use that in eu-readelf to print a string representation of the e_machine value. Since this was the only usage of ebl->name, remove that from struct ebl. Also add a testcase that makes sure dwelf_elf_e_machine_string works for all EM values in the libelf/elf.h header so we will immediately notice when a new value appears. Signed-off-by: Mark Wielaard <mark@klomp.org>
* libdwelf: New function dwelf_elf_begin.Mark Wielaard2018-11-094-3/+79
| | | | | | | | | | | | | | | | | | This introduces a new function dwelf_elf_begin which creates a (read-only) ELF handle from a possibly compressed file handle or a file that start with a linux kernel header. This can be used in eu-readelf to (re)open a (pure) ELF. eu-readelf uses libdwfl to relocate addresses in the original file in case it is ET_REL. But to show the "raw" data it might need to (re)open the file. Which could fail if the file was compressed. And produced an obscure error message: "cannot create EBL handle". This rewrites __libdw_open_file a little so that the given file handle will never be closed (whether on success or failure) and introduces a new internal function __libdw_open_elf that dwelf_elf_begin wraps. Signed-off-by: Mark Wielaard <mark@klomp.org>
* Recognize and parse GNU Property notes.Mark Wielaard2018-10-292-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GNU Property notes are different from normal notes because they use variable alignment/padding of their fields. They are 8 byte aligned, but use 4 byte fields. The name is aligned at 4 bytes and padded so that, the desc is aligned at 8 bytes. The whole note is padded to 8 bytes again. For normal notes all fields are both 4 bytes wide and 4 bytes aligned. To recognize these new kind of ELF Notes a new Elf_Type is introduced, ELF_T_NHDR8. This type is used in the xlate functions to determine how to align and pad the various fields. Since the fields themselves can now have different alignments we will have to keep track of the current alignement and use either NOTE_ALIGN4 or NOTE_ALIGN8 to determine the padding. To set the correct Elf_Type on the Elf_Data we use either the section sh_addralign or the segment p_align values. Assuming 8 means the section or segment contains the new style notes, otherwise normal notes. When we cannot determine the "alignment" directly, like when parsing special kernel sys files, we check the name "GNU" and type "GNU_PROPERTY_TYPE_0" fields. ebl_object_note now parses the new NT_GNU_PROPERTY_TYPE_0 and can extract the GNU_PROPERTY_STACK_SIZE, GNU_PROPERTY_NO_COPY_ON_PROTECTED and GNU_PROPERTY_X86_FEATURE_1_AND types GNU_PROPERTY_X86_FEATURE_1_IBT and GNU_PROPERTY_X86_FEATURE_1_SHSTK. Tests are added for extracting the note from sections or segments as set by gcc -fcf-protection. Signed-off-by: Mark Wielaard <mark@klomp.org>
* lib: Provide MAX and MIN in system.hAkihiko Odaki2016-10-122-5/+5
| | | | | | | | | | This change also creates a new header file libeu.h to provide the prototypes for the function of libeu. That hides the definition of function crc32, which can conflict with zlib, from libelf. It also prevents mistakes to refer those functions from a component which doesn't link with libeu, such as libelf. Signed-off-by: Akihiko Odaki <akihiko.odaki.4i@stu.hosei.ac.jp>
* dwelf: Add string table functions from ebl.Mark Wielaard2016-08-034-2/+435
| | | | | | | | | | | | | | | | Move the strtab functions from libebl to libdw. Programs often want to create ELF/DWARF string tables. We don't want (static) linking against ebl since those are internal functions that might change. This introduces dwelf_strtab_init, dwelf_strtab_add, dwelf_strtab_add_len, dwelf_strtab_finalize, dwelf_strent_off, dwelf_strent_str and dwelf_strtab_free. Documentation for each has been added to libdwelf.h. The add fucntion got a variant that takes the length explicitly and finalize was changed to return NULL on out of memory instead of aborting. All code and tests now uses the new functions. Signed-off-by: Mark Wielaard <mjw@redhat.com>
* libdwelf: Add dwelf_scn_gnu_compressed_size.Mark Wielaard2016-01-064-3/+94
| | | | | | Helper function to get the size of a GNU compressed zdebug section. Signed-off-by: Mark Wielaard <mjw@redhat.com>
* Move nested functions in libdwelf.Chih-Hung Hsieh2015-10-222-20/+34
| | | | | | | | * Move nested functions to file scope in libdwelf/dwelf_elf_gnu_build_id.c to compile with clang. Signed-off-by: Chih-Hung Hsieh <chh@google.com>
* libdwelf: Check the d_buf actually exists in dwelf_elf_gnu_debuglink.Mark Wielaard2014-11-142-1/+6
| | | | Signed-off-by: Mark Wielaard <mjw@redhat.com>
* libdwelf: Add dwelf_elf_gnu_build_id.Mark Wielaard2014-05-015-2/+169
| | | | | | | | | Move internal function __libdwfl_find_build_id to libdwelf and use it to add a public dwelf_elf_gnu_build_id function to extract the NT_GNU_BUILD_ID from an ELF file using either the shdrs or phdrs. Adjust internal callers and add a testcase. Signed-off-by: Mark Wielaard <mjw@redhat.com>
* libdwelf: Add dwelf_dwarf_gnu_debugaltlinkFlorian Weimer2014-04-245-1/+82
| | | | Signed-off-by: Florian Weimer <fweimer@redhat.com>
* libdwelf: New DWARF ELF Low-level Functions. Add dwelf_elf_gnu_debuglink.Mark Wielaard2014-04-245-0/+252
New public header elfutils/libdwelf.h for low-level DWARF/ELF helper functions. The new function dwelf_elf_gnu_debuglink returns the name and crc as found in the .gnu_debuglink section of an ELF file. Signed-off-by: Mark Wielaard <mjw@redhat.com>
View Lorry Controller Status